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    93 vulnerabilities

    CVE-2026-16052 (GCVE-0-2026-16052)

    Vulnerability from cvelistv5 – Published: 2026-11-12 16:28 – Updated: 2026-11-12 16:28
    VLAI
    Title
    Cookie Attribute Injection via Unescaped Semicolons in http.cookies.Morsel
    Summary
    The http.cookies.Morsel class allows separator semicolons in attribute values and includes them verbatim in all output formats. An attacker who can control these values could use this to relax the cookie's Domain or SameSite restrictions.
    CWE
    Assigner
    PSF CNA under the mitre root
    CNA scorecard B 78/100 over 32 records in the last 180 days details
    Impacted products
    Vendor Product Version
    Python Software Foundation CPython Affected: 0 , < 3.16.0 (python)
    Create a notification for this product.
    Show details on NVD website

    {
      "containers": {
        "cna": {
          "affected": [
            {
              "defaultStatus": "unaffected",
              "modules": [
                "http",
                "http.cookies"
              ],
              "product": "CPython",
              "repo": "https://github.com/python/cpython",
              "vendor": "Python Software Foundation",
              "versions": [
                {
                  "lessThan": "3.16.0",
                  "status": "affected",
                  "version": "0",
                  "versionType": "python"
                }
              ]
            }
          ],
          "credits": [
            {
              "lang": "en",
              "type": "reporter",
              "value": "Qi Deng (https://github.com/ikow)"
            },
            {
              "lang": "en",
              "type": "coordinator",
              "value": "Stan Ulbrych (https://github.com/StanFromIreland)"
            },
            {
              "lang": "en",
              "type": "remediation developer",
              "value": "Brett Smith (https://github.com/brettcs)"
            },
            {
              "lang": "en",
              "type": "remediation reviewer",
              "value": "Seth Larson (https://github.com/sethmlarson)"
            },
            {
              "lang": "en",
              "type": "remediation reviewer",
              "value": "Victor Stinner (https://github.com/vstinner)"
            },
            {
              "lang": "en",
              "type": "remediation reviewer",
              "value": "Senthil Kumaran (https://github.com/orsenthil)"
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "supportingMedia": [
                {
                  "type": "text/html",
                  "value": "The http.cookies.Morsel class allows separator semicolons in attribute\nvalues\nand includes them verbatim in all output formats. An attacker who can\ncontrol\nthese values could use this to relax the cookie\u0027s Domain or SameSite\nrestrictions."
                }
              ],
              "value": "The http.cookies.Morsel class allows separator semicolons in attribute\nvalues\nand includes them verbatim in all output formats. An attacker who can\ncontrol\nthese values could use this to relax the cookie\u0027s Domain or SameSite\nrestrictions."
            }
          ],
          "metrics": [
            {
              "cvssV4_0": {
                "Automatable": "NOT_DEFINED",
                "Recovery": "NOT_DEFINED",
                "Safety": "NOT_DEFINED",
                "attackComplexity": "LOW",
                "attackRequirements": "PRESENT",
                "attackVector": "NETWORK",
                "baseScore": 2.3,
                "baseSeverity": "LOW",
                "exploitMaturity": "NOT_DEFINED",
                "privilegesRequired": "NONE",
                "providerUrgency": "NOT_DEFINED",
                "subAvailabilityImpact": "NONE",
                "subConfidentialityImpact": "NONE",
                "subIntegrityImpact": "NONE",
                "userInteraction": "PASSIVE",
                "valueDensity": "NOT_DEFINED",
                "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N",
                "version": "4.0",
                "vulnAvailabilityImpact": "NONE",
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                "vulnerabilityResponseEffort": "NOT_DEFINED"
              },
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                }
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          ],
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                {
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                  "description": "CWE-74",
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                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-11-12T16:28:03.251Z",
            "orgId": "28c92f92-d60d-412d-b760-e73465c3df22",
            "shortName": "PSF"
          },
          "references": [
            {
              "url": "https://github.com/python/cpython/pull/161711"
            },
            {
              "url": "https://github.com/python/cpython/issues/161707"
            },
            {
              "url": "https://mail.python.org/archives/list/security-announce@python.org/thread/IZL4QUFV7PKGT2JYSU2DCBMLTWYJDGKZ/"
            }
          ],
          "source": {
            "discovery": "UNKNOWN"
          },
          "title": "Cookie Attribute Injection via Unescaped Semicolons in http.cookies.Morsel"
        }
      },
      "cveMetadata": {
        "assignerOrgId": "28c92f92-d60d-412d-b760-e73465c3df22",
        "assignerShortName": "PSF",
        "cveId": "CVE-2026-16052",
        "datePublished": "2026-11-12T16:28:03.251Z",
        "dateReserved": "2026-07-17T10:34:29.475Z",
        "dateUpdated": "2026-11-12T16:28:03.251Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }

    CVE-2026-115559 (GCVE-0-2026-115559)

    Vulnerability from cvelistv5 – Published: 2026-11-10 18:39 – Updated: 2026-11-10 18:39
    VLAI
    Title
    imaplib STARTTLS serves plaintext bytes buffered before the handshake as if they came over TLS
    Summary
    IMAP4.starttls() wraps the socket in TLS but leaves self._readbuf, imaplib's own read-ahead buffer, untouched. Any plaintext bytes that arrived in the same recv() as the tagged OK to STARTTLS are returned by readline() after the handshake, so the client treats them as the first responses on the protected channel. A network attacker who cannot break TLS can append forged lines after the server's OK, let the handshake complete with the real server and a valid certificate, and have the client accept the forged CAPABILITY and the forged tagged completion of the next command. This is the STARTTLS command/response injection class of CVE-2011-0411.
    Assigner
    PSF CNA under the mitre root
    CNA scorecard B 78/100 over 32 records in the last 180 days details
    Impacted products
    Vendor Product Version
    Python Software Foundation CPython Affected: 0 , < 3.16.0 (python)
    Create a notification for this product.
    Show details on NVD website

    {
      "containers": {
        "cna": {
          "affected": [
            {
              "defaultStatus": "unaffected",
              "modules": [
                "imaplib"
              ],
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              "repo": "https://github.com/python/cpython",
              "vendor": "Python Software Foundation",
              "versions": [
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                }
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          ],
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              "lang": "en",
              "type": "reporter",
              "value": "digit50 (https://github.com/digit50)"
            },
            {
              "lang": "en",
              "type": "coordinator",
              "value": "Jelle Zijlstra (https://github.com/JelleZijlstra)"
            },
            {
              "lang": "en",
              "type": "remediation reviewer",
              "value": "Hugo van Kemenade (https://github.com/hugovk)"
            },
            {
              "lang": "en",
              "type": "remediation reviewer",
              "value": "Seth Larson (https://github.com/sethmlarson)"
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "supportingMedia": [
                {
                  "type": "text/html",
                  "value": "IMAP4.starttls() wraps the socket in TLS but leaves self._readbuf, imaplib\u0027s own read-ahead buffer, untouched. Any plaintext bytes that arrived in the same recv() as the tagged OK to STARTTLS are returned by readline() after the handshake, so the client treats them as the first responses on the protected channel. A network attacker who cannot break TLS can append forged lines after the server\u0027s OK, let the handshake complete with the real server and a valid certificate, and have the client accept the forged CAPABILITY and the forged tagged completion of the next command. This is the STARTTLS command/response injection class of CVE-2011-0411."
                }
              ],
              "value": "IMAP4.starttls() wraps the socket in TLS but leaves self._readbuf, imaplib\u0027s own read-ahead buffer, untouched. Any plaintext bytes that arrived in the same recv() as the tagged OK to STARTTLS are returned by readline() after the handshake, so the client treats them as the first responses on the protected channel. A network attacker who cannot break TLS can append forged lines after the server\u0027s OK, let the handshake complete with the real server and a valid certificate, and have the client accept the forged CAPABILITY and the forged tagged completion of the next command. This is the STARTTLS command/response injection class of CVE-2011-0411."
            }
          ],
          "metrics": [
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              "cvssV4_0": {
                "Automatable": "NOT_DEFINED",
                "Recovery": "NOT_DEFINED",
                "Safety": "NOT_DEFINED",
                "attackComplexity": "LOW",
                "attackRequirements": "PRESENT",
                "attackVector": "NETWORK",
                "baseScore": 6.3,
                "baseSeverity": "MEDIUM",
                "exploitMaturity": "NOT_DEFINED",
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                "subAvailabilityImpact": "NONE",
                "subConfidentialityImpact": "NONE",
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          ],
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              "tags": [
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              "url": "https://github.com/python/cpython/pull/160370"
            },
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              ],
              "url": "https://github.com/python/cpython/issues/160369"
            },
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              "url": "https://mail.python.org/archives/list/security-announce@python.org/thread/LVAGFOFG26QVXEM6VXXPRMMOZBHM4CVB/"
            }
          ],
          "source": {
            "discovery": "UNKNOWN"
          },
          "title": "imaplib STARTTLS serves plaintext bytes buffered before the handshake as if they came over TLS"
        }
      },
      "cveMetadata": {
        "assignerOrgId": "28c92f92-d60d-412d-b760-e73465c3df22",
        "assignerShortName": "PSF",
        "cveId": "CVE-2026-115559",
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      },
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    }

    CVE-2026-115791 (GCVE-0-2026-115791)

    Vulnerability from cvelistv5 – Published: 2026-11-10 16:33 – Updated: 2026-11-11 04:56
    VLAI
    Title
    Prevent shadowing stdlib in gzip/tarfile/zipfile CLI during extraction
    Summary
    When tarfile or zipfile command line interface (CLI) is used to decompress an archive, a Python script shadowing the stdlib can be created. Then if an error occurs during decompressing the next file, the newly created Python script is executed. This is especially true if the created Python is called traceback.py. The problem is that Python adds the current directory to sys.path when python -m MODULE is run, and the archive is also decompressed in the current directory. The fix removes sys.path[0] in gzip, tarfile and zipfile command line interface to prevent shadowing standard library modules from extracted files.
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-11-10 00:00 UTC
    CWE
    • CWE-829 - Inclusion of Functionality from Untrusted Control Sphere
    Assigner
    PSF CNA under the mitre root
    CNA scorecard B 78/100 over 32 records in the last 180 days details
    Impacted products
    Vendor Product Version
    Python Software Foundation CPython Affected: 0 , < 3.16.0 (python)
    Create a notification for this product.
    Show details on NVD website

    {
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        ],
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              "type": "remediation reviewer",
              "value": "Ethan Furman (https://github.com/ethanfurman)"
            },
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              "lang": "en",
              "type": "remediation reviewer",
              "value": "Kirill Podoprigora (https://github.com/Eclips4)"
            },
            {
              "lang": "en",
              "type": "remediation reviewer",
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                  "value": "When tarfile or zipfile command line interface (CLI) is used to\u003cbr\u003e\ndecompress an archive, a Python script shadowing the stdlib can be\u003cbr\u003e\ncreated. Then if an error occurs during decompressing the next file,\u003cbr\u003e\nthe newly created Python script is executed. This is especially true\u003cbr\u003e\nif the created Python is called traceback.py. The problem is that\u003cbr\u003e\nPython adds the current directory to sys.path when python -m MODULE is\u003cbr\u003e\nrun, and the archive is also decompressed in the current directory.\u003cbr\u003e\n\u003cbr\u003e\nThe fix removes sys.path[0] in gzip, tarfile and zipfile command line\u003cbr\u003e\ninterface to prevent shadowing standard library modules from extracted\u003cbr\u003e\nfiles."
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            }
          ],
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                "Recovery": "NOT_DEFINED",
                "Safety": "NOT_DEFINED",
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                "attackRequirements": "PRESENT",
                "attackVector": "LOCAL",
                "baseScore": 5.3,
                "baseSeverity": "MEDIUM",
                "exploitMaturity": "NOT_DEFINED",
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              "url": "https://github.com/python/cpython/pull/161706"
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            "discovery": "UNKNOWN"
          },
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    CVE-2026-124249 (GCVE-0-2026-124249)

    Vulnerability from cvelistv5 – Published: 2026-11-09 14:20 – Updated: 2026-11-12 16:23
    VLAI
    Title
    `http.cookiejar` applies expired `Set-Cookie` to cookie store before policy validation
    Summary
    http.cookiejar.CookieJar deleted a stored cookie when a response carried an already expired Set-Cookie header for it, using the Domain and Path attributes from the header without consulting the cookie policy. A server could therefore delete cookies belonging to other domains from a shared cookie jar, such as the one used by urllib's HTTPCookieProcessor. The fix consults the cookie policy before an expired cookie may delete an existing one, as required by RFC 6265 section 5.3.
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-11-12 16:23 UTC
    CWE
    Assigner
    PSF CNA under the mitre root
    CNA scorecard B 78/100 over 32 records in the last 180 days details
    Impacted products
    Vendor Product Version
    Python Software Foundation CPython Affected: 0 , < 3.16.0a2 (python)
    Create a notification for this product.
    Show details on NVD website

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              "dateUpdated": "2026-11-12T16:23:47.134Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
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        ],
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              ]
            }
          ],
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            {
              "lang": "en",
              "type": "reporter",
              "value": "Grant Abejar (https://github.com/vinzabe)"
            },
            {
              "lang": "en",
              "type": "coordinator",
              "value": "Kirill Podoprigora (https://github.com/Eclips4)"
            },
            {
              "lang": "en",
              "type": "remediation reviewer",
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          ],
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            {
              "lang": "en",
              "supportingMedia": [
                {
                  "type": "text/html",
                  "value": "http.cookiejar.CookieJar deleted a stored cookie when a response carried an\nalready expired Set-Cookie header for it, using the Domain and Path\nattributes from the header without consulting the cookie policy. A server\ncould therefore delete cookies belonging to other domains from a shared\ncookie jar, such as the one used by urllib\u0027s HTTPCookieProcessor. The fix\nconsults the cookie policy before an expired cookie may delete an existing\none, as required by RFC 6265 section 5.3."
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    CVE-2026-19552 (GCVE-0-2026-19552)

    Vulnerability from cvelistv5 – Published: 2026-11-09 14:15 – Updated: 2026-11-12 16:30
    VLAI
    Title
    ssl.get_server_certificate(addr, ca_certs=...) verifies the chain but never the identity
    Summary
    When ca_certs parameter was supplied to ssl.get_server_certificate() function, the identity of the certificate is not checked.
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-11-12 16:29 UTC
    CWE
    • CWE-295 - Improper Certificate Validation
    Assigner
    PSF CNA under the mitre root
    CNA scorecard B 78/100 over 32 records in the last 180 days details
    Impacted products
    Vendor Product Version
    Python Software Foundation CPython Affected: 0 , < 3.16.0a2 (python)
    Create a notification for this product.
    Show details on NVD website

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    CVE-2026-119170 (GCVE-0-2026-119170)

    Vulnerability from cvelistv5 – Published: 2026-11-06 14:50 – Updated: 2026-11-07 00:09
    VLAI
    Title
    Regression in FIPS enforcement of hash algorithms affecting only Python 3.14.10
    Summary
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    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-11-06 17:23 UTC
    CWE
    • CWE-693 - Protection Mechanism Failure
    Assigner
    PSF CNA under the mitre root
    CNA scorecard B 78/100 over 32 records in the last 180 days details
    Impacted products
    Vendor Product Version
    Python Software Foundation CPython Affected: 3.14.10 , < 3.14.11 (python)
    Create a notification for this product.
    Show details on NVD website

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    CVE-2026-116566 (GCVE-0-2026-116566)

    Vulnerability from cvelistv5 – Published: 2026-10-29 17:45 – Updated: 2026-10-30 17:18
    VLAI
    Title
    socket.getaddrinfo() accepts embedded null bytes in host and port
    Summary
    socket.getaddrinfo() previously accepted null bytes within *host* and *port* parameters which can cause the values to be silently truncated.
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-10-30 17:18 UTC
    CWE
    Assigner
    PSF CNA under the mitre root
    CNA scorecard B 78/100 over 32 records in the last 180 days details
    Impacted products
    Vendor Product Version
    Python Software Foundation CPython Affected: 0 , < 3.16.0 (python)
    Create a notification for this product.
    Show details on NVD website

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    CVE-2026-103995 (GCVE-0-2026-103995)

    Vulnerability from cvelistv5 – Published: 2026-10-27 19:58 – Updated: 2026-11-04 20:20
    VLAI
    Title
    Lenient parsing of integers for response body and chunk framing
    Summary
    Response body and chunk parsing would handle non-hex or negative integers incorrectly which could result in misinterpreting HTTP response contents.
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-11-04 19:32 UTC
    CWE
    Assigner
    PSF CNA under the mitre root
    CNA scorecard B 78/100 over 32 records in the last 180 days details
    Impacted products
    Vendor Product Version
    Python Software Foundation CPython Affected: 0 , < 3.16.0 (python)
    Create a notification for this product.
    Show details on NVD website

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    CVE-2026-115557 (GCVE-0-2026-115557)

    Vulnerability from cvelistv5 – Published: 2026-10-24 14:15 – Updated: 2026-11-10 20:09
    VLAI
    Title
    Distrust compromised intermediate certificates in ssl module
    Summary
    Python has added a denylist for known compromised certificates to the "ssl" module to ensure user safety even without certificate revocation configured. Known compromised certificates will automatically be rejected regardless of the SSLContext policy configuration.
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-11-02 14:11 UTC
    CWE
    • CWE-299 - Improper check for certificate revocation
    Assigner
    PSF CNA under the mitre root
    CNA scorecard B 78/100 over 32 records in the last 180 days details
    Impacted products
    Vendor Product Version
    Python Software Foundation CPython Affected: 0 , < 3.11.18 (python)
    Affected: 3.12.0 , < 3.12.16 (python)
    Affected: 3.13.0 , < 3.13.18 (python)
    Affected: 3.14.0 , < 3.14.10 (python)
    Affected: 3.15.0 , < 3.15.2 (python)
    Affected: 3.16.0a1 , < 3.16.0 (python)
    Create a notification for this product.
    Show details on NVD website

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    CVE-2026-114583 (GCVE-0-2026-114583)

    Vulnerability from cvelistv5 – Published: 2026-10-22 20:57 – Updated: 2026-11-02 12:32
    VLAI
    Title
    tar filter allows writing outside destination via empty-named symlink
    Summary
    tarfile.tar_filter could be bypassed using crafted link entries, including symlinks with empty or directory-like names, to redirect later archive members outside the intended extraction directory. This allowed a malicious tar archive to cause tarfile.extractall() with filter="tar" to write files outside the destination directory, subject to the permissions of the extracting process. This is the tarfile.tar_filter counterpart of CVE-2026-7774, which covered tarfile.data_filter.
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-11-02 12:31 UTC
    CWE
    • CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
    Assigner
    PSF CNA under the mitre root
    CNA scorecard B 78/100 over 32 records in the last 180 days details
    Impacted products
    Vendor Product Version
    Python Software Foundation CPython Affected: 0 , < 3.11.18 (python)
    Affected: 3.12.0 , < 3.12.16 (python)
    Affected: 3.13.0 , < 3.13.18 (python)
    Affected: 3.14.0 , < 3.14.10 (python)
    Affected: 3.15.0 , < 3.15.2 (python)
    Affected: 3.16.0a1 , < 3.16.0 (python)
    Create a notification for this product.
    Show details on NVD website

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    CVE-2026-19553 (GCVE-0-2026-19553)

    Vulnerability from cvelistv5 – Published: 2026-09-30 16:17 – Updated: 2026-11-10 12:40
    VLAI
    Title
    SSLContext.wrap_bio() missing validation of server_hostname parameter
    Summary
    ssl.SSLContext.wrap_bio() didn't require the server_hostname argument to not be None if ssl.SSLContext.check_hostname was set. Due to a missing parameter check in SSLObject, if the server_hostname argument isn't supplied then hostname verification would be silently skipped. This defect could lead to programs where certificate hostname verification *appeared* to be succeeding with SSLContext.check_hostname = True and no ValueError being raised due to misconfiguration. If the program passes a server_hostname value that isn't an empty string or None to any of these APIs then certificate hostname verification proceeds as expected and the program is not affected by this vulnerability. Mitigating this vulnerability doesn't require updating Python or applying the patch. To mitigate, pass a valid non-None and non-empty server_hostname value to SSLContext.wrap_bio(), asyncio.create_connection(), or asyncio.loop.start_tls() and certificate hostname verification will proceed as expected. Upgrading to the latest version of Python or applying the patch only changes the behavior from silently skipping hostname verification to raising a ValueError, similar to SSLContext.wrap_socket(), when server_hostname isn't supplied.
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-10-16 18:33 UTC
    CWE
    Assigner
    PSF CNA under the mitre root
    CNA scorecard B 78/100 over 32 records in the last 180 days details
    Impacted products
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    Python Software Foundation CPython Affected: 0 , < 3.10.22 (python)
    Affected: 3.11.0 , < 3.11.17 (python)
    Affected: 3.12.0 , < 3.12.15 (python)
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    Affected: 3.14.0 , < 3.14.8 (python)
    Affected: 3.15.0a1 , < 3.15.0rc3 (python)
    Create a notification for this product.
    Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0) Affected: V3.1.7 , < * (custom)
    Create a notification for this product.
    Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0) Affected: V3.1.7 , < * (custom)
    Create a notification for this product.
    Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0) Affected: V3.1.7 , < * (custom)
    Create a notification for this product.
    Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0) Affected: V3.1.7 , < * (custom)
    Create a notification for this product.
    Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0) Affected: V3.1.7 , < * (custom)
    Create a notification for this product.
    Show details on NVD website

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    CVE-2026-19445 (GCVE-0-2026-19445)

    Vulnerability from cvelistv5 – Published: 2026-09-30 16:16 – Updated: 2026-11-10 12:40
    VLAI
    Title
    Use-after-free of a server-side SSLContext when sni_callback switches contexts
    Summary
    A remote, unauthenticated TLS client can make a server crash or call through a freed pointer if its sni_callback assigns a different context to SSLSocket.context (the documented way to select a certificate per server name) and nothing else keeps the original ssl.SSLContext alive. Typical cases are servers that create an SSLContext per connection or replace it while connections are open; servers that wrap their listening socket with it are not affected. Mitigation: keep a reference to every SSLContext that sets sni_callback for the lifetime of the server. TLS clients are not affected.
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-11-09 16:30 UTC
    CWE
    Assigner
    PSF CNA under the mitre root
    CNA scorecard B 78/100 over 32 records in the last 180 days details
    Impacted products
    Vendor Product Version
    Python Software Foundation CPython Affected: 0 , < 3.10.22 (python)
    Affected: 3.11.0 , < 3.11.17 (python)
    Affected: 3.12.0 , < 3.12.15 (python)
    Affected: 3.13.0 , < 3.13.16 (python)
    Affected: 3.14.0 , < 3.14.8 (python)
    Affected: 3.15.0a1 , < 3.15.0rc3 (python)
    Create a notification for this product.
    Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0) Affected: V3.1.7 , < * (custom)
    Create a notification for this product.
    Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0) Affected: V3.1.7 , < * (custom)
    Create a notification for this product.
    Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0) Affected: V3.1.7 , < * (custom)
    Create a notification for this product.
    Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0) Affected: V3.1.7 , < * (custom)
    Create a notification for this product.
    Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0) Affected: V3.1.7 , < * (custom)
    Create a notification for this product.
    Show details on NVD website

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    CVE-2026-12345 (GCVE-0-2026-12345)

    Vulnerability from cvelistv5 – Published: 2026-09-29 17:46 – Updated: 2026-10-26 00:36
    VLAI
    Title
    Race condition in tempfile.TemporaryDirectory cleanup allows deleting files outside the temporary directory
    Summary
    The cleanup of tempfile.TemporaryDirectory is vulnerable to a race condition. An attacker who can modify the tree during cleanup can replace a directory with a symbolic link, causing files outside of the temporary directory to be deleted or have their permissions and file flags reset, with the privileges of the process performing the cleanup. Note that platforms where shutil.rmtree.avoids_symlink_attacks is false, remain affected, and file flags may still be reset outside of the tree on all platforms.
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-09-29 18:38 UTC
    CWE
    • CWE-59 - Improper Link Resolution Before File Access ('Link Following')
    Assigner
    PSF CNA under the mitre root
    CNA scorecard B 78/100 over 32 records in the last 180 days details
    Impacted products
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    Affected: 3.13.0 , < 3.13.18 (python)
    Affected: 3.14.0 , < 3.14.9 (python)
    Affected: 3.15.0a1 , < 3.15.0rc3 (python)
    Create a notification for this product.
    Show details on NVD website

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    CVE-2026-82049 (GCVE-0-2026-82049)

    Vulnerability from cvelistv5 – Published: 2026-09-14 19:14 – Updated: 2026-10-11 00:39
    VLAI
    Title
    tarfile extraction filters allow file modification and content disclosure via hard link to symlink
    Summary
    In CPython 3.13 and earlier, the tarfile module's data and tar extraction filters are vulnerable to crafted archives containing a hard link to a symbolic link. Such archives may cause extraction to modify the permissions or modification time of a file outside the destination directory, or expose the contents of that file within the extracted tree.
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-09-15 00:00 UTC
    CWE
    Assigner
    PSF CNA under the mitre root
    CNA scorecard B 78/100 over 32 records in the last 180 days details
    Impacted products
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    Python Software Foundation CPython Affected: 0 , < 3.10.22 (python)
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    Affected: 3.13.0 , < 3.13.16 (python)
    Affected: 3.14.0a1 , < 3.14.0b1 (python)
    Create a notification for this product.
    Show details on NVD website

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    CVE-2026-87910 (GCVE-0-2026-87910)

    Vulnerability from cvelistv5 – Published: 2026-09-11 17:27 – Updated: 2026-10-22 00:31
    VLAI
    Title
    tarfile hardlink fallback ignores custom extraction filter rejection via None
    Summary
    When tarfile extracts a link on a system that doesn't support links, it falls back to extracting a member from the archive. In this case, the filter function is run twice: once for the extracted member, and once with name set to the location of the link. For one of the calls, the return value was ignored. Instead, the member should be skipped if either call returns None.
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-09-11 19:23 UTC
    Assigner
    PSF CNA under the mitre root
    CNA scorecard B 78/100 over 32 records in the last 180 days details
    Impacted products
    Vendor Product Version
    Python Software Foundation CPython Affected: 0 , < 3.10.22 (python)
    Affected: 3.11.0 , < 3.11.17 (python)
    Affected: 3.12.0 , < 3.12.15 (python)
    Affected: 3.13.0 , < 3.13.16 (python)
    Affected: 3.14.0 , < 3.14.9 (python)
    Affected: 3.15.0a1 , < 3.15.0rc3 (python)
    Create a notification for this product.
    Show details on NVD website

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    CVE-2026-15310 (GCVE-0-2026-15310)

    Vulnerability from cvelistv5 – Published: 2026-08-25 15:07 – Updated: 2026-11-10 12:40
    VLAI
    Title
    zipfile: bzip2/LZMA/Zstandard members decompress without a max_length bound, defeating chunked-read memory limits
    Summary
    When decompressing crafted zip files using the bzip/LZMA/Zstandard compressions, Python could use an attacker-controlled size to pre-allocate memory, possibly resulting in memory exhaustion.
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-08-25 15:34 UTC
    CWE
    Assigner
    PSF CNA under the mitre root
    CNA scorecard B 78/100 over 32 records in the last 180 days details
    Impacted products
    Vendor Product Version
    Python Software Foundation CPython Affected: 0 , < 3.10.22 (python)
    Affected: 3.11.0 , < 3.11.17 (python)
    Affected: 3.12.0 , < 3.12.15 (python)
    Affected: 3.13.0 , < 3.13.16 (python)
    Affected: 3.14.0 , < 3.14.8 (python)
    Affected: 3.15.0a1 , < 3.15.0rc2 (python)
    Create a notification for this product.
    Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0) Affected: V3.1.7 , < * (custom)
    Create a notification for this product.
    Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0) Affected: V3.1.7 , < * (custom)
    Create a notification for this product.
    Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0) Affected: V3.1.7 , < * (custom)
    Create a notification for this product.
    Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0) Affected: V3.1.7 , < * (custom)
    Create a notification for this product.
    Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0) Affected: V3.1.7 , < * (custom)
    Create a notification for this product.
    Show details on NVD website

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    CVE-2026-19672 (GCVE-0-2026-19672)

    Vulnerability from cvelistv5 – Published: 2026-08-19 15:24 – Updated: 2026-08-27 19:41
    VLAI
    Title
    tarfile extraction filter bypass allows creation of directories outside the destination
    Summary
    The tarfile module's tar and data extraction filters created directories outside the destination for members whose name leaves the destination and returns to it, such as ../evil/../dest/sub/file. The containment check used the resolved path, but intermediate directories were created from the name as given. Only empty directories are created outside the destination. Member contents are still extracted inside it. To return to the destination the member's name must contain the destination directory's own final component, so extraction into a secure randomised directory is not affected. This affects POSIX platforms only. On Windows, .. components are collapsed before the path reaches the filesystem, so the directories outside the destination are never created.
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-08-26 19:28 UTC
    CWE
    • CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
    Assigner
    PSF CNA under the mitre root
    CNA scorecard B 78/100 over 32 records in the last 180 days details
    Impacted products
    Vendor Product Version
    Python Software Foundation CPython Affected: 0 , < 3.16.0 (python)
    Create a notification for this product.
    Show details on NVD website

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    CVE-2026-15806 (GCVE-0-2026-15806)

    Vulnerability from cvelistv5 – Published: 2026-08-18 15:50 – Updated: 2026-11-10 12:40
    VLAI
    Title
    `HTTPPasswordMgr` can send saved HTTPS credentials via HTTP because of incorrect scheme matching
    Summary
    The HTTPPasswordMgr class in the urllib.request module, along with its subclasses HTTPPasswordMgrWithDefaultRealm and HTTPPasswordMgrWithPriorAuth, did not take the URL scheme into account when matching stored credentials against a requested URL. Credentials added for an https:// URL were also used for requests to the same host over http://, so an attacker able to redirect or downgrade a client to plain HTTP (for example, via an HTTPS-to-HTTP redirect or an on-path position) could capture credentials in cleartext. Credentials added for http:// URLs could likewise be sent over https://. Credential matching is now scoped by URL scheme. Credentials registered with a URL that includes a scheme are only used for requests with the same scheme. Credentials registered with a bare authority (such as example.com or example.com:8080) continue to match any scheme, preserving compatibility with existing code, including proxy authentication. Users who cannot upgrade immediately can mitigate by ensuring that applications never make plain http:// requests to hosts for which credentials are registered, for example by not following redirects to http:// URLs.
    SSVC
    Exploitation: poc Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-08-18 18:56 UTC
    Assigner
    PSF CNA under the mitre root
    CNA scorecard B 78/100 over 32 records in the last 180 days details
    Impacted products
    Vendor Product Version
    Python Software Foundation CPython Affected: 0 , < 3.10.22 (python)
    Affected: 3.11.0 , < 3.11.17 (python)
    Affected: 3.12.0 , < 3.12.15 (python)
    Affected: 3.13.0 , < 3.13.16 (python)
    Affected: 3.14.0 , < 3.14.8 (python)
    Affected: 3.15.0a1 , < 3.15.0rc2 (python)
    Create a notification for this product.
    Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0) Affected: V3.1.7 , < * (custom)
    Create a notification for this product.
    Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0) Affected: V3.1.7 , < * (custom)
    Create a notification for this product.
    Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0) Affected: V3.1.7 , < * (custom)
    Create a notification for this product.
    Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0) Affected: V3.1.7 , < * (custom)
    Create a notification for this product.
    Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0) Affected: V3.1.7 , < * (custom)
    Create a notification for this product.
    Show details on NVD website

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    CVE-2026-17084 (GCVE-0-2026-17084)

    Vulnerability from cvelistv5 – Published: 2026-08-18 13:57 – Updated: 2026-11-10 12:40
    VLAI
    Title
    stringprep.map_table_b2() deviates from RFC 3454 Table B.2
    Summary
    The "stringprep" module didn't process characters from RFC 3454 tables B.2 or B.3 correctly: the latest Unicode codepoint attributes were used instead of the specified Unicode 3.2.0. This behavior would cause mismatches when processing domain names using IDNA 2003 (the "idna" codec) and the in_table_b2() function of the "stringprep" module. This only affects domain names containing characters that were not previously registered or had their Unicode attributes such as case-folding behavior updated since Unicode 3.2.0.
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-08-18 16:03 UTC
    CWE
    • CWE-436 - Interpretation Conflict
    Assigner
    PSF CNA under the mitre root
    CNA scorecard B 78/100 over 32 records in the last 180 days details
    Impacted products
    Vendor Product Version
    Python Software Foundation CPython Affected: 0 , < 3.10.22 (python)
    Affected: 3.11.0 , < 3.11.17 (python)
    Affected: 3.12.0 , < 3.12.15 (python)
    Affected: 3.13.0 , < 3.13.16 (python)
    Affected: 3.14.0 , < 3.14.8 (python)
    Affected: 3.15.0a1 , < 3.15.0rc2 (python)
    Create a notification for this product.
    Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0) Affected: V3.1.7 , < * (custom)
    Create a notification for this product.
    Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0) Affected: V3.1.7 , < * (custom)
    Create a notification for this product.
    Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0) Affected: V3.1.7 , < * (custom)
    Create a notification for this product.
    Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0) Affected: V3.1.7 , < * (custom)
    Create a notification for this product.
    Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0) Affected: V3.1.7 , < * (custom)
    Create a notification for this product.
    Show details on NVD website

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    CVE-2026-18503 (GCVE-0-2026-18503)

    Vulnerability from cvelistv5 – Published: 2026-08-10 13:45 – Updated: 2026-11-10 12:40
    VLAI
    Title
    Super-linear CPU usage for unbounded input to csv.Sniffer.sniff()
    Summary
    Attacker-controlled CSV samples can trigger super-linear regular-expression work during dialect sniffing and consume significant CPU when applications pass unbounded input to csv.Sniffer.sniff().
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-08-10 17:56 UTC
    CWE
    Assigner
    PSF CNA under the mitre root
    CNA scorecard B 78/100 over 32 records in the last 180 days details
    Impacted products
    Vendor Product Version
    Python Software Foundation CPython Affected: 0 , < 3.10.21 (python)
    Affected: 3.11.0 , < 3.11.16 (python)
    Affected: 3.12.0 , < 3.12.14 (python)
    Affected: 3.13.0 , < 3.13.15 (python)
    Affected: 3.14.0 , < 3.14.7 (python)
    Affected: 3.15.0a1 , < 3.15.0rc1 (python)
    Affected: 3.16.0a1 , < 3.16.0 (python)
    Create a notification for this product.
    Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0) Affected: V3.1.7 , < * (custom)
    Create a notification for this product.
    Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0) Affected: V3.1.7 , < * (custom)
    Create a notification for this product.
    Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0) Affected: V3.1.7 , < * (custom)
    Create a notification for this product.
    Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0) Affected: V3.1.7 , < * (custom)
    Create a notification for this product.
    Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0) Affected: V3.1.7 , < * (custom)
    Create a notification for this product.
    Show details on NVD website

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    CVE-2026-13346 (GCVE-0-2026-13346)

    Vulnerability from cvelistv5 – Published: 2026-07-29 18:33 – Updated: 2026-07-29 20:21
    VLAI
    Title
    pip absolute path traversal during download from malicious package indexes
    Summary
    pip would incorrectly handle doubly-encoded package URLs from indexes allowing for files to be installed to arbitrary locations on disk even when installing wheels. This vulnerability requires downloading or installing a package from a malicious package index to succeed, malicious packages alone are not able to exploit this vulnerability. Note that this vulnerability only materially impacts users running `pip download` with the `--only-binary` option as installing source distributions from an untrusted index is already an unsafe operation that executes code during install time.
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-07-29 19:08 UTC
    CWE
    • CWE-36 - Absolute path traversal
    Assigner
    PSF CNA under the mitre root
    CNA scorecard B 78/100 over 32 records in the last 180 days details
    Impacted products
    Vendor Product Version
    Python Packaging Authority pip Affected: 0 , < 26.2 (python)
    Create a notification for this product.
    Show details on NVD website

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    CVE-2026-6879 (GCVE-0-2026-6879)

    Vulnerability from cvelistv5 – Published: 2026-07-28 13:46 – Updated: 2026-08-13 00:27
    VLAI
    Title
    Quadratic Behavior in xml.etree.ElementPath Index Predicates
    Summary
    `Element.findall()` and fully-consumed `Element.iterfind()` exhibit `O(n^2)` time complexity when using XPath index predicates (e.g. `[1]`, `[last()]`, `[last()-N]`) on XML documents with many same-tag siblings. `Element.find()` is only affected when the first match is near the end  of the sibling list, such as with `[last()]` or `[last()-N]`;  `.//item[1]` short-circuits after the first match.
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-07-28 14:49 UTC
    CWE
    • CWE-407 - Inefficient Algorithmic Complexity
    Assigner
    PSF CNA under the mitre root
    CNA scorecard B 78/100 over 32 records in the last 180 days details
    Impacted products
    Vendor Product Version
    Python Software Foundation CPython Affected: 0 , < 3.10.21 (python)
    Affected: 3.11.0 , < 3.11.16 (python)
    Affected: 3.12.0 , < 3.12.14 (python)
    Affected: 3.13.0 , < 3.13.15 (python)
    Affected: 3.14.0 , < 3.14.7 (python)
    Affected: 3.15.0a1 , < 3.15.0rc1 (python)
    Create a notification for this product.
    Show details on NVD website

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    CVE-2026-15308 (GCVE-0-2026-15308)

    Vulnerability from cvelistv5 – Published: 2026-07-09 17:10 – Updated: 2026-11-10 12:40
    VLAI
    Title
    Incremental HTMLParser feed() allows CPU-exhaustion DoS via repeated unterminated markup declarations
    Summary
    The incremental HTML parser (html.parser.HTMLParser) allows for CPU denial-of-service through repeated unterminated markup declarations when processing uncontrolled data.
    SSVC
    Exploitation: none Automatable: yes Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-07-09 17:31 UTC
    CWE
    Assigner
    PSF CNA under the mitre root
    CNA scorecard B 78/100 over 32 records in the last 180 days details
    Impacted products
    Vendor Product Version
    Python Software Foundation CPython Affected: 0 , < 3.10.21 (python)
    Affected: 3.11.0 , < 3.11.16 (python)
    Affected: 3.12.0 , < 3.12.14 (python)
    Affected: 3.13.0 , < 3.13.15 (python)
    Affected: 3.14.0 , < 3.14.7 (python)
    Affected: 3.15.0a1 , < 3.15.0b4 (python)
    Create a notification for this product.
    Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0) Affected: V3.1.7 , < * (custom)
    Create a notification for this product.
    Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0) Affected: V3.1.7 , < * (custom)
    Create a notification for this product.
    Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0) Affected: V3.1.7 , < * (custom)
    Create a notification for this product.
    Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0) Affected: V3.1.7 , < * (custom)
    Create a notification for this product.
    Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0) Affected: V3.1.7 , < * (custom)
    Create a notification for this product.
    Show details on NVD website

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    CVE-2026-4360 (GCVE-0-2026-4360)

    Vulnerability from cvelistv5 – Published: 2026-06-30 14:45 – Updated: 2026-08-13 00:27
    VLAI
    Title
    Tarfile.extract() doesn't fully respect filter parameter
    Summary
    In the Tarfile.extract() function, the filter parameter is not passed properly when extracting hardlinks. An affected system that extracts content from untrusted tar files could end up writing files with an unexpected uid/gid despite the user passing filter='data' to the extract() function.
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-06-30 15:28 UTC
    CWE
    Assigner
    PSF CNA under the mitre root
    CNA scorecard B 78/100 over 32 records in the last 180 days details
    Impacted products
    Vendor Product Version
    Python Software Foundation CPython Affected: 0 , < 3.10.21 (python)
    Affected: 3.11.0 , < 3.11.16 (python)
    Affected: 3.12.0 , < 3.12.14 (python)
    Affected: 3.13.0 , < 3.13.15 (python)
    Affected: 3.14.0 , < 3.14.7 (python)
    Affected: 3.15.0a1 , < 3.15.0b4 (python)
    Create a notification for this product.
    Show details on NVD website

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    CVE-2026-11972 (GCVE-0-2026-11972)

    Vulnerability from cvelistv5 – Published: 2026-06-23 22:02 – Updated: 2026-08-13 00:28
    VLAI
    Title
    tarfile opened in streaming mode mishandles EOF
    Summary
    When using the "tarfile" module with a file opened in "streaming mode" (mode="r|") the tarfile module did not properly handle EOF, making archive parsing take exponentially longer.
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-06-24 15:33 UTC
    Assigner
    PSF CNA under the mitre root
    CNA scorecard B 78/100 over 32 records in the last 180 days details
    Impacted products
    Vendor Product Version
    Python Software Foundation CPython Affected: 0 , < 3.10.21 (python)
    Affected: 3.11.0 , < 3.11.16 (python)
    Affected: 3.12.0 , < 3.12.14 (python)
    Affected: 3.13.0 , < 3.13.15 (python)
    Affected: 3.14.0 , < 3.14.7 (python)
    Affected: 3.15.0a1 , < 3.15.0b4 (python)
    Create a notification for this product.
    Show details on NVD website

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    CVE-2026-0864 (GCVE-0-2026-0864)

    Vulnerability from cvelistv5 – Published: 2026-06-23 17:42 – Updated: 2026-08-13 00:29
    VLAI
    Title
    Configuration Injection via Carriage Return (\r) in write() method
    Summary
    When using the "configparser" module to write configuration files containing multi-line text values with carriage return characters (\r) the resulting file could be injected with unexpected keys and values if the attacker controls the written value.
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-06-23 18:34 UTC
    CWE
    • CWE-74 - Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
    Assigner
    PSF CNA under the mitre root
    CNA scorecard B 78/100 over 32 records in the last 180 days details
    Impacted products
    Vendor Product Version
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    Affected: 3.14.0 , < 3.14.7 (python)
    Affected: 3.15.0a1 , < 3.15.0b4 (python)
    Create a notification for this product.
    Show details on NVD website

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    CVE-2026-11940 (GCVE-0-2026-11940)

    Vulnerability from cvelistv5 – Published: 2026-06-23 16:04 – Updated: 2026-08-13 00:28
    VLAI
    Title
    tarfile extraction filter bypass allows escaping the destination directory
    Summary
    tarfile.extractall() with the 'data' or 'tar' filter could be bypassed by a crafted archive where a hardlink references a symlink stored at a deeper name than the hardlink itself.  The extraction fallback validated the symlink at it's archived location but recreated it at the hardlink's shallower path, letting a relative target the filter judged contained escape the destination directory.  This allowed a malicious tar archive to create a symlink pointing outside the destination, enabling out-of-destination file reads or writes. This was an incomplete fix of CVE-2025-4330.
    SSVC
    Exploitation: none Automatable: yes Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-06-23 17:57 UTC
    Assigner
    PSF CNA under the mitre root
    CNA scorecard B 78/100 over 32 records in the last 180 days details
    Impacted products
    Vendor Product Version
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    Affected: 3.14.0 , < 3.14.7 (python)
    Affected: 3.15.0a1 , < 3.15.0b4 (python)
    Create a notification for this product.
    Show details on NVD website

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    CVE-2026-12003 (GCVE-0-2026-12003)

    Vulnerability from cvelistv5 – Published: 2026-06-16 15:18 – Updated: 2026-08-13 00:28
    VLAI
    Title
    CPython >3.11 Insecure Input Validation resulting in privilege escalation
    Summary
    To allow builds of Python to be run from an in-tree layout (rather than an installed file layout), the VPATH variable is defined at build time and used to locate certain landmarks - specifically, Modules/setup.local. When this landmark is found relative to VPATH relative to the executable, Python assumes it is running in a source tree and generates a different default sys.path. This code remains in release builds, so that release-ready builds can be built in-tree. On Windows, since builds are written to 'PCbuild/', the value of VPATH is set to '..\..', which results in a landmark of '..\..\Modules\setup.local'. This path is outside the install directory of Python, and may have different permissions, potentially allowing a low-privilege user to create the landmark and an alternative `Lib` folder that will be discovered by an otherwise restricted install. Such a setup occurs with the legacy default install location for all users (in the now superseded EXE installer), due to how Windows allows all users to create folders in the root directory of their OS drive. Our recommended mitigation on Windows is to migrate away from the legacy installer and use the new [Python install manager](https://www.python.org/downloads/latest/pymanager/) to install for the current user. Installs where the directory two levels above the Python installation directory have equivalent permissions are unaffected (in general, a per-user install cannot be modified at all by other users, removing any escalation of privilege risk, and could be directly modified by a privileged user, making the potential tampering irrelevant). Alternative mitigations might include preemptively creating and restricting access to a `Modules` directory. Be aware that only 3.13 and 3.14 will receive updated legacy installers - earlier fixes are only provided as sources. Platforms other than Windows allow VPATH to be overridden, but as they don't usually use a separated directory in the build for binaries, are unlikely to have a landmark reference outside of the install directory. The landmark detection involving VPATH is a fallback for when a more specific landmark - .\pybuilddir.txt - is absent, and was included for compatibility. Future releases of Python will no longer include the fallback, and so builds will need to generate or preserve the pybuilddir.txt file in order to work in-tree. This landmark file has been generated on Windows since 3.11, and on other platforms for longer.
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-06-16 17:53 UTC
    CWE
    Assigner
    PSF CNA under the mitre root
    CNA scorecard B 78/100 over 32 records in the last 180 days details
    Impacted products
    Vendor Product Version
    Python Software Foundation CPython Affected: 0 , < 3.11.16 (python)
    Affected: 3.12.0 , < 3.12.14 (python)
    Affected: 3.13.0 , < 3.13.15 (python)
    Affected: 3.14.0 , < 3.14.7 (python)
    Affected: 3.15.0a1 , < 3.15.0b3 (python)
    Create a notification for this product.
    Show details on NVD website

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    CVE-2026-9669 (GCVE-0-2026-9669)

    Vulnerability from cvelistv5 – Published: 2026-06-08 22:01 – Updated: 2026-11-10 12:40
    VLAI
    Title
    bz2.BZ2Decompressor reuse after error can cause a stack buffer overflow
    Summary
    bz2.BZ2Decompressor objects could be reused after a decompression error. If an application caught the resulting OSError and retried with the same decompressor, crafted input could cause the decompressor to resume from an invalid internal state and perform out-of-bounds writes to a stack buffer. This could crash the process when processing untrusted data.
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-06-16 12:23 UTC
    CWE
    • CWE-121 - Stack-based buffer overflow
    Assigner
    PSF CNA under the mitre root
    CNA scorecard B 78/100 over 32 records in the last 180 days details
    Impacted products
    Vendor Product Version
    Python Software Foundation CPython Affected: 0 , < 3.10.21 (python)
    Affected: 3.11.0 , < 3.11.16 (python)
    Affected: 3.12.0 , < 3.12.14 (python)
    Affected: 3.13.0 , < 3.13.14 (python)
    Affected: 3.14.0 , < 3.14.6 (python)
    Affected: 3.15.0a1 , < 3.15.0b3 (python)
    Create a notification for this product.
    Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0) Affected: V3.1.7 , < * (custom)
    Create a notification for this product.
    Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0) Affected: V3.1.7 , < * (custom)
    Create a notification for this product.
    Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0) Affected: V3.1.7 , < * (custom)
    Create a notification for this product.
    Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0) Affected: V3.1.7 , < * (custom)
    Create a notification for this product.
    Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0) Affected: V3.1.7 , < * (custom)
    Create a notification for this product.
    Show details on NVD website

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    CVE-2026-7774 (GCVE-0-2026-7774)

    Vulnerability from cvelistv5 – Published: 2026-06-04 14:21 – Updated: 2026-08-13 00:26
    VLAI
    Title
    tarfile.data_filter path traversal bypass allows writing outside the extraction directory
    Summary
    tarfile.data_filter could be bypassed using crafted link entries, including symlinks with empty or directory-like names, to redirect later archive members outside the intended extraction directory. This allowed a malicious tar archive to cause tarfile.extractall() to write files outside the destination directory, subject to the permissions of the extracting process.
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-06-04 17:27 UTC
    CWE
    Assigner
    PSF CNA under the mitre root
    CNA scorecard B 78/100 over 32 records in the last 180 days details
    Impacted products
    Vendor Product Version
    Python Software Foundation CPython Affected: 0 , < 3.10.21 (python)
    Affected: 3.11.0 , < 3.11.16 (python)
    Affected: 3.12.0 , < 3.12.14 (python)
    Affected: 3.13.0 , < 3.13.14 (python)
    Affected: 3.14.0 , < 3.14.6 (python)
    Affected: 3.15.0a1 , < 3.15.0b2 (python)
    Create a notification for this product.
    Show details on NVD website

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